# [R] Contrasts and MC

Erin Hodgess hodgess at uhddx01.dt.uh.edu
Wed Jul 24 17:00:45 CEST 2002

Dear R People:

I have a few questions about multiple comparisons

I've tried some things but with no success.

Suppose I have a completely randomized design,
and I want to have the contrast

\mu_1 - 0.5 \mu_2 - 0.5 \mu_2

How do I set that up, please?

I used the C command, and ran aov, but the results were identical to those
with no contrasts.

Also, is there a command for Dunne'ts multiple range test?

Sincerely,
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
1 Main Street
Houston, TX 77002
mailto: hodgess at uhddx01.dt.uh.edu
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